dcsimg

Comprehensive Description

provided by North American Flora
Rubus vitifolius Cham. & Schlecht. Linnaea 2: 10. 1827
Rubus ursinus glabralus Presl, Epim. Bot, 197. 1851.
Stems climbing over bushes or trailing, biennial, 1-2 m. long, hirsute and with weak, mostly straight prickles, sometimes glabrate the second year; leaves of the tuiions 3-foliolate; stipules linear-subulate, about 1 cm. long; petioles, petiolules, and midveins hirsute as well as prickly; petioles 3-4 cm. long; leaflets ovate, acute or short-acuminate at the apex, obtuse or rounded, or rarely subcordate, at the base, sparingly hirsute on both sides, or glabrate in age, sharply double-serrate, green on both sides, 4-8 cm. long; petiolule of the terminal leaflet 1-2 cm. long, those of the lateral ones 1-3 mm. long; leaves of the floral branches ternate or unifoliolate; leaflets of the ternate leaves similar to those of the turions, but more rhombicovate, less acuminate at the apex and often acutish at the base; unifoliolate leaf-blades usually more or less cordate at the base and 3-lobed, with the terminal lobe longer; inflorescence corymbose, terminal, hirsute and weakly prickly; sepals lanceolate, grayish-tomentose on both sides, 8-10 mm. long, caudate-acuminate, rarely with foliaceous tips and then much longer, closing around the fruit; petals of the staminate flowers elliptic, 10-15 mm. long, white, those of the essentially pistillate flowers oval, 5 mm. long; fruit elongate, 8-12 mm. long, 7-8 mm. thick; drupelets numerous, pubescent; putamen slightly reticulate.
Type locality : San Francisco, California.
Distribution: Central and southern California, mostly near the coast.
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bibliographic citation
Per Axel Rydberg. 1913. ROSACEAE (pars). North American flora. vol 22(5). New York Botanical Garden, New York, NY
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